Description of problem: The kernel-utils package contains ia32 microcode released May 1 2001, but there is at least two microcode file released in 2004. See: http://www.urbanmyth.org/microcode/
I rolled my own kernel-utils using the 1.09 microcode_ctl (as the site says, the app itself is unchanged, it just includes the updated microcode.dat file) and it worked fine on my system: microcode: CPU0 updated from revision 0x35 to 0x39, date = 06042003 I can't tell any difference, but it's newer so it must be better :)
*** Bug 132246 has been marked as a duplicate of this bug. ***
*** Bug 125090 has been marked as a duplicate of this bug. ***
went out into updates-testing today, will go to live updates real soon.
Please note that the microcode has been updated again. See: http://www. urbanmyth.org/microcode/, or get http://www.urbanmyth.org/microcode/ microcode_ctl-1.12.tar.gz for the actual code. Thanks on behalf of those of us whose motherboard vendors won't provide updates.